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Table 1 Subjects’ characteristics

From: Short-term effects of a nicotine-free e-cigarette compared to a traditional cigarette in smokers and non-smokers

 

Overall

Smokers

Non-smokers

P value

Gender (M/F)

11/9

4/6

7/3

0.370a

Age (mean ± SD, years)

39.3 ± 12.6

42.3 ± 12.8

36.2 ± 12.3

0.291b

Weight (mean ± SD, kg)

67.9 ± 10.4

63.5 ± 10.1

72.3 ± 9.2

0.056b

Height (mean ± SD, cm)

169. ± 10.0

163 ± 7.4

176 ± 8.3

0.002b

BMI (mean ± SD, kg/m2)

23.5 ± 2.5

23.7 ± 3.1

23.3 ± 1.9

0.704b

Smoke history (pack-years) - mean ± SD (range)

-

19.4 ± 10.8 (5–35)

-

-

  1. aFisher’s exact test
  2. bt-test for equality of means